broad-leaved dock vs bitter dock

broad-leaved dock and bitter dock both are nouns.

Word	Noun	Adjective	Verb	Adverb
broad-leaved dock	Yes	No	No	No
bitter dock	Yes	No	No	No

As nouns, broad-leaved dock and bitter dock are synonyms defined as:

broad-leaved dock and bitter dock: European dock with broad obtuse leaves and bitter rootstock common as a weed in North America

Other synonyms of broad-leaved dock include Rumex obtusifolius, yellow dock.

broad-leaved dock (noun)	bitter dock (noun)
European dock with broad obtuse leaves and bitter rootstock common as a weed in North America	European dock with broad obtuse leaves and bitter rootstock common as a weed in North America